Alarm-clock-setting means.



W. A. ARMOUR. ALARM CLOCK STTING MEANS.

APPLICATION FILED JULY 18. 1908.

Patented June 29, 1909.

gli ww -4 RMOUR, OF THOMASTON, CONNECTICUT, ASSIGNOR TO SETH THOMASCLOCK OF THOMASTON, CONNCTICUT, A CORPORATION OF CONNECTICUT.

nLeniecnoon-snrrrne Manns.

Application :Bled July l, 1908.

Fiom it' may concern: 3

it anovfn that I, WILLIAM A. ARMOUR,

ton, Connecticut, have invented cernd useful improvements inAlarmlvieans, of which the following and exact description.

n relates to a 24E-hour setting or alarm clocks. Such an arent as l haveshown is susceptible of a vide application, but is more particularlyapplicable to a continuous alarm such as disclosed in the drawings. Ihave also shown in connection with my invention an improved holding,releasing and restoring mechanism for the continuous alarm, for which areleasing mechanism is adapted to periodically rel alarm and allow it toring until toreo. to normal position by hand, handoperated restoringmeans which is adapted to shut oli' the alarm Without locking it in itsshut-oli position but to shut it oli and simultaneously place it inposition to be again ref eased by the next periodic action of themechanism. it therefore becomes able to have this periodic release ofthe place once in 24 hours, instead of 1a nou s as heretofore, Whichnecessitates the se a setting means for setting the releasing mechanismto act at any predetermined in the 24 hours. It is essential in allholding and releasing mechanisms for alarm clocks to have a relativelystationary portion for holding the alarm in operation and a movableportion operated by the clock movement to periodically cooperate Withthe stationary if lding portion and release the alarm. In

"er time the cooperative action between e portions, a setting means isusually vided and it is immaterial Whether this utin n eans is mountedto have a iixed relalo iiovable portion or iixed relation e stationaryportion, as the same results ained in either case. n trie preferredconstruction Which I have shown in the present embodiment of my inr non,I have attached the setting means to e movable portion which is operatedby the clock movement.

iiy invention will be defined in the claims.

in 'the drawings, Figure 1 is a front elevation oi clock movement andsetting yans lug. 2 is a similar view of a fragmentary portion of thesame having the parts in Specification of Letters Patent.

"n ot the United States, residing at- Patented June 29, 1909. Serial No.44%,167.

front of the line, AB Fig. 3 removed; and Fig. 3 is a section throughthe center of the setting means taken along X-Y Fig. 2,.

The main frame of the clock movement is indicated at 1, and at the rightside of said frame is shown the ordinary clock movement comprising amain spring 2 and lpinions 3. The hour and minute hands by are indicatedat 28 and 29, respectively. At the left end side of the frame 1 is showna similar movement for o erating a continuous alarm, that is, one Whicwill ring from 30 to 40 minutes at a time, unless shut oit. 'The mainspring of said alarm movement is indicated at 4, the gear pinions at 5,and the bell at 6. The hammer 7 is operated by the usual pawl andratchet construction 8 and 9 which need not be here specificallydescribed. An arm 10 fixed in any suitable Way to the pawl S extendsover the top of a holding member 11 pivoted at 12, and when said holdingmember is held in its raised or normal position, the arm 10 of said pawl8 prevents the same from being vibrated by the alarm movement, as isclear. A latch 13 pivoted on the main frame at 14 is provided with stopsfor retaining the holding member 11 in its raised or normal positionthrough a pin 15 of said holding member and said latch 13, together withthe holding member 11, constitute holding means to normally provent thealarm from o erating.

Means for restoring t e holding member 11 to its normal position afterthe same has been unlatched to release the alarm, consist ofa lever 16pivoted at 17 on the frame, and having a cam notch 18 at its up )er endfor engaging a pin 19 of said holding ever. The lower end of lever 16has a pin 17Il playing in the slot 18a of a bellcrank lever 19a pivotedat 19b for operating the same. A spring 20u is provided for returningsaid levers 19Z1 and 16to original position after being operated, todisengage t e cam '18 from the pm 19 of holding lever 11.

In order to release the holding means a let-oft` device is providedwhich is operated by the clock movement and also adjustable withrelation thereto in order to release the holding means any predeterminedtime in the 24 hours. The let-oil device consists of a cam 20 carried ona sleeve 21 which is loosely mounted on an arbor 22 of the main frame.Surrounding the sleeve 21 and frictionally operated there-4 engaging thesame is the sleeve ofthe rotata- I 25. This numeral of the dialindicatedwill ble ortion or dial member 23. This portion l 23 as a pinion 24 ixedthereto adapted to mesh with a pinion`25 on the hour shaft to beconstantly rotated thereby and is so geared as to rotate once with everytwo revolutions of the hour hand. To the outer end of said rotatableortion 23 and adjacent the clock face 24 o1 the clock is fixed a dial25a. Said dial is divided oif into two equal halfportions or divisions,each division being regularly spaced by 12 numerals to indicate thehours of the day. @ne half division is indicated A. M. and the other, P.M. The let-oii` device is also provided with a pointer 26 fixed to itsouter end which extends' over the face of said dial to show the relativeadjustment between said let-oit' device and said rotatable portion 23.Thus it is clear that the portion 23'With the dial 25 is constantlyrotated by the clock movement, and that the let-ofi device 21, 20 isfrictionally carried with said rotatable portion or dial member.Moreover, the let-oli device may be adjusted by hand4 relative to saidconstantly movable portion 23 to properly time its action on the volding means, as maybe desired. The cam 2O of the let-od device carriesa pin 27, which, on the rotation of the cam, strikes against the lowerend of the latch 13 and thereby unlatches the holding member 11, whichthereafter rests by its outer end on the cam 20 as shown in dottedlinesFig.2. With the further rotation oi the cam the holding member 11 cornesto the cut-away ortion of said cam and drops into it to re ease thealarm mechanism.

The alarm may be stopped and all th parts returned to normal positionready for a new operation, by throwing the lever 19 to the right asindicated in `Fig. 2.

The operation of my setting mechanism is brieiiy as follows. Since thedial 25 is conriected so as to be rotated by the hour hand but with onlyhalf the speed, it will be noted that all the points of this dial arrivein a position adjacent the end of the stationary A holding member oncein 24 hours, and for convenience we mark that part of the dial which hapens to be opposite this position at 12 o'cloc noon with the numeral 12.As the other numerals are re ularly spaced around said dial, it is plaint at the successive numbers 1 to 12 on the setting dial will I arrive ata position opposite the end of the holding member each in'. an hoursdifference of time. In other words, the numeral ofthe dial opposite theholding member/will be the same as that indicated by the hour hand, towit, .the hour of the day. If, then, it is desired to set the alarm sothat it will go off at .any plarticular hour or time, the pointer 26,

whi is iixed on the let-ofi' device 21 opposite the cut-away portion ofthe cam 2G, is set opposite the proper numeral on the dial reach itsposition opposite the end of the holding member at an hour of the daywhich corresponds to said numeral, at which time the pointer 26 and cam20 will also -be opposite said holding member to release the same andallow the alarm to operate.

What I claim is:

1. In combination, a clock movement, an alarm mechanism, holding meansfor normally preventing the operation of said alarm,

a 24 hour dial member geared to the clock i movement so as to be rotatedthereby at all times at a speed of one revolution in 24 hours, a let-ofidevice normally rotated by the clock movement only once in 24 hours butvadjustable with relation thereto whereby said let-off device may becaused to operate at any predetermined time, a hand-operated indicatoradjustable around said dial and con-l nected to said let-off device toadjust the same.

2. In combination, a clock movement, an alarm mechanism, holding meansfor normally preventing said alarm mechanism from operating, a 24 hourdial member geared to the clock movement to be rotated thereby at alltimes at a speed of one revolution in 24 hours, a let-off device havingaA frictional sleeve connection causing it to move with said dial memberand adapted to be normally operated-thereby only once in 24 hours butbeing freely adjustable with relation thereto, a hand-operated indicatorconnected to said let-off device and arranged to move around said dialmember wherebyA said let-eti device may be adjusted to operate at anypredetermined time.

3. In combination, a clock movement, an alarm mechanism, holding meansfor normally preventing said alarm from operating, a rotatably mountedlet-off device, a 24 hour dial member having a frictional sleeve bearingsurrounding the outside of said let-ofi device, said dial member beinggeared to the clock movement to be rotated thereby at all times at a seed of one revolution in 24 hours and normal y carry with it saidlet-oit device, a pointer connected to said let-ofi device and movableover the face of said dial member whereby said let-olin device may beadjusted to operate at any predetermined time.

4. A clock having a 12 hour dial face, a movement, an alarm,` arelatively stationary holding" means, a let-0H device rotated by i means`for setting said let-ofi' device for operation at any predeterminedtime in the 24 hours, one of s'aid parts being a pointer and the other a24 hour setting dial, said pointer being connected to the let-off deviceto adjust the same to release the holding means at any predeterminedtime and adjustable with relation'to the setting dial, said setting dialbein connected by gearing to the movement to ie rotated thereby at alltimes at a speed of one revolution in 24 hours.

5. A clock having. a 12 hour dial face, a movement, an alarm, arelatively stationary holding means, a let-off device rotated by themovement and adjustable with relation thereto and adapted to releasesaid holdin means and allow said alarm to operate unti said holdingmeans is restored to normal osition, a two-part hand-o erated settingmeans for setting said let-o device for operation at any predeterminedtime withm the 24 hours, one of said parts being a' pointer and theother a 24 hour setting dial, said pointer being connected to thelet-ofldevice vto adjust the same to release the -holding means at anyredetermined time and adjustable with re ation' to the setting dial,said setting dial being connected by earing to thel movement to berotated there/by once in 24 hours and hand-operated means for restorinsaid holding means to normalposition, t ereby stopping said alarm.

6. In combination, a clock movement, an alarm mechanism, holding meanscomprising a pivoted holding member for engaving said alarm, and a latchfor retaining sai .holdingY member in normal position to prevent theoperation of said alarm, a rotatable portion geared to said clockmovement to rotate once in 24 hours and having iXed thereto a 24 hourdial, a let-off device flictionally carried on said rotatable portionand ad'ustable thereon consistin of a pin for unlatchi'ng said holdingmem er and a cam for releasing .the same and also having a pointerextending over the face of said dia to show the relative adjustmentvbetween said let-off device and said rotatable portion said let-offdevice ada ted torelease said holding means at any pre etermined timeand allow said alarm mechanism to o erate until said. holding means isrestored) to normal osition, and hande-operated means for-restoring saidholding means to normal position.

Signed at Thomaston, Conn.' this 18th day of June 1908.

1 WILLIAM A. ARMOUR. Witnesses:

WM. T. WOODRUFF, L. S. PARSONS.

